Ash blossom blight - treatment possible?

Asked September 30, 2019, 12:43 PM EDT

Our city's Natural Resource Technician told us our green ash trees have blossom blight. Is there a treatment for this? We are getting the trees injected to stave off the ash borers, it sure would be nice if they looked better, too.

1 Response

Thanks for the question.

There are various fungal and bacterial diseases that can affect ash trees. While I’m not suggesting that the answer given to you of blossom blight is wrong, its symptoms can be confused with other ash diseases. Before treating any tree disease, it is important that the causative agent be accurately identified. Otherwise treatments may be ineffective and/or a waste of money. Blossom blight is a very general term and may be used in a generic manner. We would suggest that the most prudent action at this time is to get an accurate diagnosis. The University of Minnesota has an excellent plant disease identification laboratory and for a fee can provide you a correct assessment. Contact information for them is: